Compare: 2026 XMCS Aero Racing Base XS vs 2026 XDS X-LAB RT9 Base XS

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of XMCS Aero Racing

Somewhat upright stack and reach vs trend of performance road bikes

Design deviates from other sizes of XDS X-LAB RT9

Stack	509mm	510mm +1mm
Reach	373mm	362mm -11mm
Stack to Reach Ratio	1.36:1	1.41:1
Seat Tube Length, C-T	—	430mm
Seat Tube Length, Unknown	450mm	—
Top Tube Length, Effective/Horizontal Center	505mm	—
Top Tube Length, Effective/Horizontal Unknown	—	498mm
Top Tube Slope	8.6deg	11.3deg +2.7deg
Head Tube Angle	71.25deg	70.5deg -0.75deg
Seat Tube Angle	75.5deg	75deg -0.5deg
Head Tube Length	97.4mm	110mm +12.6mm
Bottom Bracket Drop	74mm	74mm +0mm
Bottom Bracket Height	272mm	265mm -7mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	403.3mm	403.3mm +0mm
Front-Center	571mm	574mm +3mm
Front-Center Horizontal	565.7mm	569.2mm +3.5mm
Wheelbase	969mm	972.5mm +3.5mm
Fork Offset/Rake	47mm	49.8mm +2.8mm
Fork Length (On-Axis)	375mm	—
Trail	67.8mm high	67.2mm -0.6mm high
Mechanical Trail	64.2mm	63.4mm -0.8mm
Wheel Flop	20.6mm	21.2mm +0.6mm
Standover Height	726mm	704mm -22mm
Tire to Pedal Spindle	55mm 170 mm cranks	65mm +10mm 170 mm cranks
Pedal Spindle to Ground Clearance	102mm 170 mm cranks	95mm -7mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	35mm	28mm -7mm
Tire Width Max	35mm	—
Tire Outer Diameter	692mm	678mm -14mm
Bike Length with Tires	1661mm	1650.5mm -10.5mm
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Carbon/Composite	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Disc	Disc